Replacing a memory module

Use this information to replace a memory module.

Note

• See Memory module installation for notes and information that you must consider when you install DIMMs.
• Confirm that the server supports the DIMM that you are installing, see https://static.lenovo.com/us/en/serverproven/index.shtml.

The following illustration shows the location of the DIMM connectors on the system board.

Figure 1. DIMM connectors

To install a DIMM, complete the following steps:

Note

The odd-numbered DIMM connectors are white-colored, while the even-numbered DIMM connectors are black-colored.

1. Read the safety information that begins on page Safety and Installation guidelines.
2. Turn off the server (see Turning off the server) and all attached peripheral devices. Disconnect all power cords; then, disconnect all external cables as necessary to replace the device.
3. Remove the server top cover (see Removing the server top cover).
4. Carefully flip open the retaining clip on each end of the DIMM connector.
   Attention

   To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently.

   Figure 2. DIMM installation
   

   

   
   
5. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the outside of the server. Then, remove the DIMM from the package.
6. Turn the DIMM so that the DIMM keys align correctly with the connector.
7. Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the end of the DIMM connector. Firmly press the DIMM straight down into the connector by applying pressure on both ends of the DIMM simultaneously. The retaining clips snap into the locked position when the DIMM is firmly seated in the connector.
   Attention

   If there is a gap between the DIMM and the retaining clips, the DIMM has not been correctly inserted; open the retaining clips, remove the DIMM, and then reinsert it.
8. Repeat steps 5 through 7 until all the new or replacement DIMMs are installed.
9. Install the air baffle (see Replacing the air baffle).
10. Install the PCI riser-card assembly (see Replacing a PCI riser-card assembly).
11. Rotate the hot-swap rear hard disk drive downward (see Rotating the hot-swap rear hard disk drive cage down).
12. Replace the server top cover (see Replacing the server top cover).
13. Reconnect the external cables; then, reconnect the power cords and turn on the peripheral devices and the server.
14. Go to the Setup utility and make sure all the installed DIMMs are present and enabled.